Journal-bushing for jacks.



T. A. McG |NLEY.

JOURNAL BUSHING FOR JACKS.

Patented Mar. 27, 1917.

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THOMAS A. MCGINLEY, OF PTTTSBURGH, PENNSYLVANIA, ASSIGNORf TO THE DUFFMANUFACTURING COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OFPENNSYLVANIA.

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Specification of Letters Patent.

JOURNAL-BUSHING FOR J ACKS.

Patented Ma. 27, iaiv.

Application filed September 23, 1916. Serial N... 121,738.

To all whom it may concern;; I

Be it known 'that I, THoM-As A. MOGIN- LEY, a citizen of theUnitedSt'ates, residing at Pittsburgh, Allegheny county, Pennsylvania,have invented a new and useful Improvement in Journal -Bushings forJacks, of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming part of thisspecification, in which-- Figure 1 is a side elevation-of one form ofjack, to which I have applied one form of my invention.

Fig. 2 is a detail sectional view, on the line 11-11 of Fig. 1, showingone of the bush ings in position, and the other bushing ready to beapplied.

Fig. 3 is a perspective view of one of the bushings.

Fig. 4 is a perspective view of the spring key for securing the bushingin position, and

Fig. 5 is a detail sectional view of another form of socket lever.

This invention relates to an improvement in bearings for jack socketlevers, and is designed to provide means for readily and securelyretaining the socket lever journal bushings in position in the jackframe.

The precise nature of my invention will be best understood by referenceto the accompanying drawings, which will now be described, it beingpremised, however, that various changes may be made in the details ofconstruction of the several parts, without departing from the spirit andscope of my invention as defined in the appended claims. Referring tothe accompanying drawings,

the reference character 2 designates a jack frame having side extensions3 for the bearings for the socket lever. 4;: designates the lifting bar,which is provided with the usual ratchet teeth, and which are arrangedto be engaged by a pawl 5 connected to a socket lever 6. The socketlever 6 is provided with trunnions 7 which are journaled in bushings 8seated in openings 9 in the extensions 3 of the jack frame. Theextensions 3 of the jack frame are also provided with recesses 10 on theinner faces thereof, as well as key seats 11. These key seats 11 arearranged to receive spring keys 12, which engage one wall of the seatand a fiat portion 13on the bushings 8. The keys aretalso provided withan upwardly extending projection 14 arranged to engage the edge of thekey seats at the inside thereof, to retain the key in position withinthe seat, and which will in turn retain the bushings 8 in position.

The socket lever is first slipped into posit1on by passing the trunnionsdownwardly thro-u h the recesses 10,and the bushings 8, toget ier withthe spring keys, are then sllpped into position. The legs of the keysare compressed by means of suitable pliers sufiiciently to permit theextensions 14 to pass under the walls of the key seats.

When it is desired to removethe bush- 1ngs,the projection or extension14: is engaged and depressed by meansof a screw driver, {and thepressure applied thereto will not only compress the spring members, butwill also tend to force the keys outwardly. After the-keys have beenremoved the bushings can readily .be withdrawn from their seats, so thatthe socket lever can be removed from the frame.

In Figs. '1 and 2 I have shown a socket lever having integral trunnions7, while in Fig. 5 I have shown a socket lever having a through shaftwhich forms the trunnions 7 The advantages of my invention result fromthe provislon of a spring key for retaining a journal bushing inposition with relation to the jack frame and the socket lever. v

I claim: 1

1. A jack frame having socket lever bearings, removable bushings adaptedto be seated in said bearings to form bearings for the socket leverjournals, each of said bushings having a key seat, there being a keyings "having a key seat, there being a key seat in each of the bearingsparallel with the axes of the socket lever journals, a spring key forretaining each bearing in position, each of said keys having two legs,

one of said legs being arranged to engage the key seat in the bearingsin the frame, and an angular projection on one of the legs for engagingthe edge of the key seat in the bearingframe, the end of the other legbeing arranged to engage the end Wall of the key seat on the bushing,substantially as described.

3. A jack frame having socket lever bearings, bushings seated thereinand arranged to form bearings for the journals of the socket lever, eachof said bushings having a key seat on the periphery thereof, there beinga key seat in each of the bearings of the frame extending parallel withthe axis of the bearings from the ends thereof, and a U-shaped springkey for each bushing, the legs of said key extending parallel with theaxes of the bearings, the end of one of said legs engaging the end Wallof the seat on the bushing, and a projection on the end of the other legfor engaging the inner edge of the seat in the frame, substantially asdescribed.

In testimony whereof, I have hereunto set my hand.

I THOMAS A. MOGINLEY. Witnesses:

D. J. GREINER, M. L. HAYES.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

